, decent 500mg dose of vitamin c, convenient smaller tablet, steady release of vitamin c throughout the day, added rosehips & bioflavanoidsvitamin c is such an important vitamin for active bodies. not only does it help protect the immune system at times when it may be compromised by the demands of heavy exercise but it helps build strong collagen & other connective tissue in the body to enhance recovery from training & racing. the problem comes when you are unable to supply the body with a constant source of vitamin c since it can not be stored in the body.this time release product is a great solution enabling the blood stream to access smaller doses of vitamin c over 6 hours so you have peace of mind. rosehips & bioflavanoids are believed to boost the vitamin c's natural ability to protect cells from oxidative stress caused by free radical damage.